Rounding machine



C. C. BLAKE nouunms m0511115 Dec. 4, 1923.

Filled Feb. e, 1921 Dec. 4 1923.

C. C. BLAKE ROUNDING MACHINE 3 Sheets-Sheet 2- Filed FQM 9. 192i C. C.BLAKE Dec. 4, 1923. y 1,476,04o

ROUNDING MACHINE Filed Feb. 9. 1921 3 Sheets-Sheet 5 Patented Dec. 4,1923.Y

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PATE

CHARLESv C. BLAKE, 0F BROOKLINE, MASSACHUSETTS, ASSIGNOR T0 C. BLAKE,INT CORPORATED, OFV BOSTON, BIASSACHUSETTS,A CORPORATION OF YORK. i

RoUNDINe-MACHINE.

VApplication led'February 9, 1921. Serial'No. 443,582'.

To @ZZ whom it may concern.'

Be it known that l, CHARLES C. BLAKE, a citizen of .the United States,residing at Brookline, in the countyof Norfolk and State ofMassachusetts, have inventedcertain improvements in a Rounding Machine,of which thefollovving description, 1n con` nection with theaccompanying drawings, 1sV

To the accomplishment of this object, and

such others as will hereinafter appear, the features of the inventionrelate to certain devices, combinations and arrangements of partshereinafter described and then sety forth broadly and in detail in the4appended claims'vvhich possess advantages readily apparent to thoseskilled` in the art.

The various features of the present invention lwill be ybest understoodfrom an inspection of the accompanying drawings illustrating thepreferred embodiment of the invention as constructed for rounding aninsole secured] to a last bottom, in which Figure 1 is a frontelevationof the insole rounding machine;

Fig. 2 is a plan of the platen or Work supporting table; v f Y Fig. 3 isa diagrammatic plan illustrating the relation between the edge of therounded insole and the guiding flange on the leader;

Fig. 4 is an elevation of the last having a rounded insole attachedthereto;

Fig. 5 is a detail in elevation of the leader;

Fig. 6 is a planof the. inside guide; and

Fig. 7 is an elevation of the inside guide.

In the illustrated embodiment of the in-V vention a roughly died-outinsole 1 (Fig. 1) is secured to a last 2 which is jacked upon a Worksupport 3.of the saddle and spindle type. The Work support 3 is providedWith runners 4 Whichslide on a platen or table v5 secured upon the'upper end of a post 6 which is mounted for vertical movement in bear- Inorder to feed theivork support 3 over@ Y d Y .ings 7 formed in abracketS on acolumn-Q. V

the table 5 and thus'transfer the pointl of.

operation of the. operating means around the insole, the Work support 3is mounted on a leader 12 (Figs. 1 and 5) providedwith a guiding-,ange13. As shown in Fig. 3 the projections ofthe edge ofthe bottom of thelast at the sides thereof upon the plane of' the leader coincide WiththeA inside face of tionsof the edge ofthe last bottom upon the plane ofthe leader fall Within the guiding flange. This variation at the toe ofthe' leader is for the accommodation of the -toebox Which in asubsequentoperation Will be applied to the toe-end of the insole..`Wheny the upper. having the toe-box within it is lasted to the edgeface of theinsole in ac-y cordance With the method of lasting prac-A Ithe guiding flange. At the toe the projecf tised by me the projectionsofthe free edge 'Y of the upper upon the plane of the leaderwillcoincide with the inside face of the.

guiding flange throughout its length. Y Stated in another Way,the'projections upon the. planejofthe leader -of the; outside edge ofthe-toe-box securedin position on the toe of the insole Will coincidewith the guiding flange at .the toe ofthe leader. I The leader isactuated to'transfer the point of operation of the tool around the`insole Y, vby a pinion 14 (Fig.2) which engages'rack teeth 15 (Figs. 1'and5) formed on the exterior face of the guiding flange ,13. The.

pinion 14 is secured to the upperend of Va short shaft 16 which carriesat its lower end a vbevel gear 17 (Fig. 1)v engagedwith a '3 f similargear 18. The bevel gear 18 is connected by a universal joint 19 to ashort shaft 20 Which is connected by a universal Vjoint 21 to a shaft 22journaled in. the column 9. Theshaft22 carries a Worm wheel 23 whichmeshes with a Worm 24 on a shaft 25 also journaled inthe column V9. Theshaft 25 (Fi 1) is driven from a short shaft 26, journale Y the machine,by a belt 28 Which passes over pulleys-on the shafts 25 and 26,respectively.

In order to correct the relative position of the operating means and theinsole duringv the transfer of the point of operation ofthe operatingmeans around the insole to maintain the edge of the insole in proximityto the operating means in the line of feedthe guiding flange 13 on theleader is. engaged in a bracket 27 on the base'. of f los by a rotatablymounted pin 29 (Figs. 2, 3, 6 and 7) arranged to engage inside theflange and by guide rolls 30 and 31 (Fig. 2)

arranged to engage outside the flange. These guiding devices are mounted`on supports secured "to the bottom of the table 5 and are positionedabove the table 5 through an opening 32 formed therein. The supflange 13by a toggle 36 the links of whichy are pivoted to the bottom of thetable 5 and to the lever 33, respectively. W'hen ,they toggle is madethepin 29 is locked in engage-y ment with the inside face of the guidingflange.` The toggle 36 is made or broken by a handle 37 forming anextension of one of the links of the toggle.

. In order tohold the leader down upon the work table the exterior faceof the guiding flange 13 is'bevelled as shown at 38 (Fig. 5). rlhisbevelled surface is engaged by the frusto-conical guide rol-ls 30and 31.With this construction the guides 29, 30 and A31 have a three-pointcontactr with the guiding flange and thus act to swing the worklaterally during its feed about an aXis coinciding with the point ofoperation of the operating means to correct the relative position of theoperating means and the insole and thereby maintain the edge of theinsole adjacent the operating point inthe line of feed. To enable therolls 30 and 31 to engage the flange at all times withoutl binding asthey traverse the reverse curves of the flange at the shank and aroundthe toe the guide rolls'130 and 31 are journaled on thefree ends oflinks 39 and 40, respectively, the rear ends of which are pivoted to alever 41 pivoted at 42 to the bottom of the table 5. The links 39Y and40 are also pivoted to links 43 and 44 pivoted to the bottom of thetable 5. The guide rolls 30 and 31 are thus supported for movement`tranversely of the feed of the leader exactly as if they were supportedon a slide but without the frictional resistance incident to the' use ofa slide. The rolls 30 and 31 are actuated in a direction to press themagainst the exterior face of the guiding flange 13 by means of a spring45 (Fig.l 2). At its free end the lever 41 is pivoted' to a block 46which loosely receives a rod 47 pivoted at 48 beneath` the table 5. Thespring 45 is coiled around the rod 47 and is interposed between theblock 46 anda shoulder 49y on the rod. n

lvVith thisA construction the spring 45 normally holds the guide rolls30 and 31 in the -inoperative position shown in Fig. 2. When the guidingflange 13 on the leader is interposed between the inside and outsideguides and the handle 37 is actuated in adirectiony and toe oftheleader, respectively. YThe lever 41, however, inversely transmits thepressure of the spring so that the rolls 30 and 31 are vheld withV agreater pressure against the toe of the leader kthan they are heldagainst the shank of the leader.

The tool for trimming the roughly diedout insole to the edgeof the lastbottom consists of a knife 50 (Fig. 1) which cooperates with an anvil orfootl 51 mounted "on a cradle 52, all of which have a lconstructionandmode of operation identical Lwith the knife, `anvil and cradleillustrated and described in the patent to Blake, No. 1,340,520, grantedMay 18, 1920.

The knife 50 vibrates in a plane intersecting the edge of the lastbottom at the sides thereof. In order to maintain the plane of ltheknife intersecting` the edge of the last.

bottom during its transfer around'the toe of the insole, notwithstandingthe toe-box variation hereinbefore referred to, the leader 12 is movedon the table 5 to shift the insole supported from the leadertransversely of the feed. The insole is shiftedy twice during therounding operation, first to remove the tool from the path determinedbythe leader, and then to return the toolvto said path. The knife isthus caused to traverse a detour at theftoe of the insole coterminouswith the path determined rby the leader.

ln order to shift the leader on the surface of the table 5 transverselyof the feed, the roll 29 6) is eccentrically mounted, with relation tothe axisabout which the roll turns on the support 33, to provide a lowface 53and a highface 54. The 'low face 53 engages the inside face ofthe guiding-flange during the transfer of the point of operation of thetooll along the sides and` around the heel of the work (Fig. while thehigh face 54 engagesv the guiding ila-nge during'the transfer of thepointof'operation of the tool around the toeof the work.

The low face of the roll is held in engagement with the guiding flangeby a pair of pins 55 and 56, the points of which engage the flange andhold the roll from rotation on the support 33. The high face of the rollis held against the flange by a pair of pins 57 and 58. l

yln order to rotate the roll and thus `shift the roll'atthe proper timeto move'the leader transversely of the feed to cause the Vtool totraverse the detour, the leader is provided with a pair of slots 60 and61. As the leader is fed longitudinally in the direction ofthe arrow(Fig. 3) the pins 56 and 58 move into the'slots 60 and 6l, respectively,whereupon' the travelling leader ,rotates the roll 29 to bring the highface and the points ofthe pins 57 and 58 into"-engagement with .theguiding flangef- This causesA the rolll to move the leader transverselyof the feed against the tension of the spring-45, which removes the toolfrom' the path determined by the leaderand starts the tool along thedetour The tool is lreturned to the pathv determined by the leader by asecond pair ITof slots 62 and 63 in the leader (Fig. 3).which engagethepins 55 and 57 respectively, and rotate the roll 29 to return the lowface 53 into engagement with the flange.

' It will ybe apparent 'to those skilled in the art-that instead ofusing two pins and two slots to rotate theroll'a single pin and asinglev slot maybe employed. But two pins and two slots impart a uniformmotion with considerable throw to the roll and their use is to bepreferred as a single pin anda single slotwould impart a harmonicVmotion with a smallthrow tothe roll.

While the invention has been illustrated and described in connectionwith a machine for rounding insoles assembled on a last bottom, it willbe apparent to those skilled in the art that many features of theinvention may be employed in machines for malring the last whichsupports the insole and also in machines for rounding the outsole, knownas rough rounding and channelling machines.

What is claimed as new is: Y

1. rlhe combination with an operating tool,of a shoe supporting jack, avleader secured thereto provided with a guiding flange, means forfeeding the leader longitudinally, and means for swinging the leaderlaterally during its feed longitudinally comprising a pair of guidesarranged to engage the outside face of the guiding flange and arotatable eccentrically mounted guide arranged to engage the inside faceof the guiding flange.

2. The combination with an operating tool, of a shoe supporting jack, aleader secured thereto provided with a guiding flange, means for feedingthe leader longitudinally, means for swinging theV leader laterallyduring its feed longitudinally comprising a pair of guides arranged toengage the outside face of the guiding flange and lan eccentricallymounted guide arranged to engage the inside face of the guiding flange,and means for operating the eccentrically mounted guide to cause the lowand-high faces thereof to alternately engage the inside face of theguiding flange.

3. The combination with an operating tool, of a shoe supporting jack, aleader secured thereto provided with a guiding flange, means for feedingthe leader longitudinally, means for swinging the leader laterallyduring its feed longitudinally com-f prising a pair of guides varranged'to engage the outside face of the'guidingflangeyand an eccentricallymounted guide provided withl a setof projecting pins arranged to lengagethe inside face ofthe guiding flange.

. 4.*The combination' with an operating tool, of a shoe supportingjaclr,,a leader secured thereto. provided; withy la guiding 5.- Thecombination with an- .operating Y tool offa shoe supporting jack, aleader secured thereto provided with a guiding flange, means for feedingthe leader longitudinally, `means for swingingthe leader laterallyduringits feed longitudinally comprising a pair of guides arranged to engagethe outside face of the guiding flange, and` a rotatable .eccentricallymounted guide ar ranged to engage the inside face of the guiding iange,and two pairs of pins connected to the guide, one pair operating to holdthe low face of the eccentrically mounted guide in engagement with theguiding flange and the other pair operating to hold the 'high face ofthe eccentric guide in engagement `with the guiding flange.

6. The combination with an operating tool of a shoe supporting jack, aleader secured thereto provided with -a guiding flange, means forfeeding the leader longitudinally, means for swinging the leaderlaterally during its feed longitudinally comprising apair of guidesarranged to engage the outside face of the guiding flange, a rotatableeccentrically mounted guide Var-V ranged to engage the` inside face ofthe guiding flange, two pairs of pins connectedl to Vthe guide, one pairoperating to hold the the relative position of the tool and 'thesupengage the'inside faceof the guiding-flange,

port including a leader for guiding the tool Vthrough a predeterminedpath, and mechanism for shifting the leader on the surface of the tableto cause the tool to traverse 'a detour coterminous With said path.

8. A machine of the class described, having, in combination, anoperating tool, a Work support, ia leader connected thereto, a table,means for feeding the leader over the table to transfer the point ofoperation `of the tool around ythe Work, means 4for swingingthe leaderduring a predetermined partvof the travel of the tool around the Workabout an axis passing substantially through 'the point of operation ofthe tool,

` and mechanism for shifting the vleader on the table transversely ofthe feed of thev of the tool around Athe Work, means for Swinging theleader during a predetermined part of the travel of the tool around theWork about an axis passing substantially through the point of operationof `the tool, :e

mechanism vfor shifting the leader on the table transversely of the feedofthe leader rst to remove the point of operation of the tool fromproximity to the axis about `which the leader swings and then to returnthe point of operation of the tool to its nor-` mal position. l

l0. A machine of the class described, hav` ing, in combination, an"operating tool, a table, a Work support, a leader connected thereto,means for feeding the leader to transfer the point of operationiof `thetool along' the Work, means for swinging the leader laterally tomaintain the edge of the Worlr in the line of feed, and means forshifting the leader on the surface; of the table transversely of thefeed during a predetermined part of the travel ofthe tool along theWork.

ln testimony whereof I have signed my name to this specification.

CHARLESv C. BLAKE.

